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Cerrena [4.2K]
3 years ago
11

PLEASE HELP I CANT CONTINUE WITH MY WORK UNLESS THESE ARE COMPLETE AND CORRECT

Mathematics
1 answer:
Snezhnost [94]3 years ago
6 0

Answer:

1) x=3, y=-3

Step-by-step explanation:

10x + 7y = 9 —— (1)

-4x -7y = 9 —— (2)

(1) + (2)

6x = 18

x = 18/6

x = 3

put x=3 in (1)

10(3) + 7y = 9

30 + 7y = 9

7y = 9 - 30

7y = -21

y = -21/7

y = -3

please give me brainlist if it is helpful for you

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Answer:

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Step-by-step explanation:

(whole secant) x (external part) = (tangent)^2

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Distribute

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Subtract 25 from each side

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Step-by-step explanation:

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What is 1/10 as a percent?<br> what is 1/5 as a percent?
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Step-by-step explanation:

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Read 2 more answers
A company will make a cereal box with whole number dimensions and a volume of 100 cubic centimeters. if carboard cost $0.05 per
Lelu [443]
Possible dimension of a box with a volume of 100 cubic cm
10 x 10 x 1 = 100
10 x 5 x 2 = 100
5 x 5 x 4 = 100

Surface area:
10 x 10 x 1 dimensions: 
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10 x 1 = 10 x 4 = 40 sq. cm
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10 x 5 x 2 dimension
10 x 5 = 50 x 2 = 100 sq. cm
10 x 2 = 20 x 2 = 40 sq. cm
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0.08 per box * 100 boxes = $8

5 x 5 x 4 dimension
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The best dimension to use to have the least cost to make 100 boxes is 5 x 5 x 4. It only costs $6.50 to make 100 boxes.
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3 years ago
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Alex17521 [72]

Answer:

A, C, and E are the answers

Step-by-step explanation:

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